Machine for barbing metallic strips



(No Model.) ,2 Sheets-Sheet 1. 0. ROGERS.

MACHINE FOR BARBING METALLIC STRIPS.

Patented Apr. 27, 1886.

UNITED STATES PATENT OFFICE.

CHARLES ROGERS, OF ALLEGHENY CITY, ASSIGNOR TO 0. l). LEVIS, OF

' PITTSBURG, PENNSYLVANIA.

MACHINE FOR BARBING METALLIC STRIPS.

IFICATIQN forming part of Letters Patent No. 340,619, dated April 27, 1886.

Application lilcd December ER, 1985. Serial No. 186,565. (No model.)

To aZZ whom it may concern:

Be it known that I, CHARLES RooERs, a citizen of the United States, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Dies for Barbing Metallic Strips Used in Fencing; and Ido hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

The nature of my invention consists in the form and construction and manner of placing the dies or tools for making fiat barbed fencerails, as will be hereinafter more fully explained.

In the accompanying drawings, Figure 1 represents a side elevation of a machine for making or forming the barbs on metallic strips. Fig. 2 is a front elevation of the same. Fig. 3 is a side elevation of one of the male dies. Fig. 4 is a plan view of the same. Fig. 5 is a perspective view of the male die. Fig. 6 is a plan view of the female die, and also used for securing the male die in place. Fig. 7 is a sectional elevation of the same. Fig. 8 is an enlarged detailed view of the rolls, showing the male die in the upper roll in the female die of thelower roll, the plate for securing the dies in place being taken away from the lower roll the better to show the working parts. Fig. 9 is a sectional elevation of the same. Fig. 1.0 is a side elevation of a part of the lower gearwheel, having a device whereby the roll secured to the same shaft may be adjusted or placed in the exact position before securing the gear-wheel to the shaft. Fig. 11 is a sectional elevation of the same.

In the construction of my machine, I provide a frame or housing, a, of suitable size and form of construction, between which is mounted on shafts b c, in suitable bearings (1, two gearwheels, cf, meshing the one with the other. Secured to the parallel shafts b c, on one side of the frame a, are two large rolls, g h, the one placed directly above the other, having adj ustable and detachable male dies i and female dies j, arranged alternately about the perimeter.

The male dies 6 (see Figs. 3, 4, and 5) are trian- 'gular in form, taken on a eross-section,having an oblique or angular cutting-edge, 7t, and are secured in position by placing them inside of the femaledie j, over which is placed a circular ring or plate, Z, attached to the rolls 9 h by bolts m.

The female diesj (see Figs. 6 and '7) have an opening, 8. of the exact form as that of a crosssection of the male die i, and are secured alternately to the rolls g 71. by the same ring or plate land bolts m. Small tapbolt's 11.,plaeed below each of the dies, provide a means for adjusting the same.

The two parallel shafts, b c, secured in the bearings (Z, are arranged in an opening in the housing a, and held in place by vertical bolts 0, which afford means for adj nstment.

Secured to ihelower shaft, b, isa short crank, 11, which may be used to seen re the lower gearwheel, 6, to the same shaft 7) when the rolls g h are in proper position and the gearavheels cf meshing. The bolt 1 in the slot 1' is tightened or set, which attaches the gear wheel c to the shaft 1), thus adjusting the rolls 9 h and gearing of to the greatest degree of accu racy.

A.pulley or belt-wheel, i, attached to the lower shaft, 1), affords means for operating the machine.

Suitable guides, 21, secured to the front and rear of the housing a, guide the metallic strip under or between the dies '1 j and confine the same to the exact position.

The cutting-edge I; of the male die '5 (see Figs. 3 and 5) projects a short distance above the surface of the barbing-rolls g 71. The angle of the cutting-edge 7a is such that the point e strikes the strip first, while the heel w of the same is but a short distance above, and, not being close to the female diej, bonds the barb over its rounded heel.

The operation of the machine is as follows: By rotating the pulleyt the shaft I), gear 0, and roll it are rotated. The gear 0 meshes with the upper gear, j, and imparts motion thereto and to the shaft 0. The roll 9, being rigidlyiixed to the shaft 0, is also rotated. The gears e f are of equal diameter, so also are the rolls. Therefore when the male die '6 and its receiving female die j, in the face of the opposite roll, are adjusted to mesh, the parts will accurate] y engage at each rotation. The stock is fed ICC through the guides a, and is passed between the rolls g h. The dies may be set to barb one or both sides of the metallic strip. Said dies may also be adjusted to produce alternate barbs on the stripthat is to say, turn a barb up on one side and down on the other side, thus producing alternate barbs on both sides of the strip. The male die i slits the edge of the strip at an angle and forces the slit or barbed portion into the female die j.

The angle of inclination of the barbs from the strip may be regulated by the form of the dies.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In a machine for barbing metallic strips, the combination of the roll-carrying shafts, the barbing-rolls provided with adjustable and d e tachable male and female dies, gearing for rotating said shafts, and a crank secured to one of the shafts, said crank being formed with a slot atone end, whereby one of the gear-wheels may be adjusted substantially in the manner and for the purpose stated.

2. In a machine of the character described, the combination of one or more male and female dies,each of which said female dies is provided with an open groove of triangular form along one side thereof, and an oblique cutting-edge at one end of the groove, and a rounded heel over which the barb is bent, said male dies being of a triangular prism shape having an oblique cutting-edge and rounded heel, which, in conjunction with the above-described female die, bends the barb at right angles to the plane of the strip without breaking or in anywise impairing the same.

' CHARLES ROGERS.

lVitncsses:

H. '1. MORRIS, M. E. HARRISON. 

